Q.Write a note on antigen-antibody complex.
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Start your 14-day free trial to unlock the full solution →An antigen-antibody complex forms when an antibody's antigen-binding site (paratope) binds, in a highly specific lock-and-key manner, to a matching site (epitope) on an antigen.
Step 1. On the surface of an antigen, the specific combining site that an antibody actually recognises is called an antigenic determinant, or epitope.
Step 2. On the antibody, the matching site is located on the variable regions of its heavy and light chains, and is called the paratope, or antigen-binding site.
Step 3. When a paratope binds its matching epitope, the two fit together in a highly specific 'lock-and-key' manner, forming an antigen-antibody complex. …
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